Nope. That number went into the registry 11/63. At this stage of the game the delay factor (the time it was registered to the time it was built) can be quite long.

Check on this site about dating your camera and the alpha codes. Somewhere you should find a code similar to K3A. Most of the time they were found on the underside of the front rail strut (the piece that links the left rail to the right rail)

I have a camera that has the code stamped in white ink on the inside left of the body (where the rod of a kalart rangefinder would have come through from the outside)

_________________"In order to invent, you need a good imagination and a lot of junk" Thomas Edison

Thanks Les. The manufacturing code is "F4A", which would put it around May '64.
F - May
4 - 1964 or 74 (mine would be 64)
A - Product as initially released (I suppose this would confirm 1964).
Thanks again for your help.

Actually the May might be June. The site skips the letter D and last I noticed F was the 6th letter of the alphabet. I'll ask Leigh if the missing 'D' was a Graflexism (they didn't use the I for fear of it looking alike a 1) or a typo.

L

_________________"In order to invent, you need a good imagination and a lot of junk" Thomas Edison

Regarding the missing letter "D", I sent a message to "bugs@graflex.org" a while ago on that very matter and never heard a thing. I'm sure it's a mistake, as there is an example right below which uses "D" and translates it as an April date.